Carbon-consumer for boilers and the like.



J. S. ANDREWS. CARBON CONSUMER FOR BOILERS AND THE LIKE.

APPLICATION FILED MAY 6. 1915. LQlfiQQ. Patented Feb. 20, 1917.

2 SHEETS-SHEET I e /zcs efiifo nag J. S. ANDREWS.

CARBON CONSUMER FOR BOILERS AND THE LIKE.

APPLICATION FILED MAY 6, 19I5- Pat ented; Feb. 20,1917.

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JOHN s. ANDREWS, or GARY, innrnna.

CARBON-CONSUMER FOE BOILERS AND THE LIKE.

Specification of Letters Patent.

Patented Feb. 20, 117.

Application filed May 6, 1915. Serial No. 26,253.

an improved means for promoting complete 7 combustion and consumption ofthe fuel and smoke thus conducing to economy in fuel and generalefficiency in operation.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings, forming a part of this specification, and in which,

Figure 1 is a side view shown partially in section of a constructionembodying my invention,

Fig. 2, a topplan view of the same,

Fig. 3, a longitudinal section taken through the same,

Fig. 4, an enlarged cross section taken on line H of Fig. 3, and

Fig. 5, an enlarged section taken onv line 5-5 of Fig. 3.

The preferred form of construction as illustrated in the drawingscomprises a hollow fitting 6 arranged in an ordinary horizontallyextending stove pipe 7 extending from a boiler or other heater 8 asindicated. The fitting 6 is provided in its side adjacent the boiler 8with air passages 9 adapted to permit the escape of air therethroughinto the lower portion of the stove pipe 7, in which is provided endopenings 10 communicating with the lower ends of stem portions 11 ofsubstantially T-shaped heating chambers secured to the exterior of thepipe 7. Each of the heating chambers is provided with cross arms 12having perforations 13 in their under sides adapted to ad'- mit airtherethrough. By this arrangement the air resting against the outersides of the pipe 7 immediately under chamber portions 12 is heated andrises and enters through the perforations 13, at the same time airpassing from fitting 6 through openings 9 into the lower portion ofsmoke pipe 7. This action is due to the fact that while the air heatedagainst the exterior of the smoke pipe 7 is lighter than the exterioratmosphere the air within the fitting 6, although hotter than the airentering chamber portions 12 is nevertheless cooler than the smoke andflames passing upwardly through the smoke pipe so that the air 'inchamber 6 tends to flow along the bottom of pipe 7 into the boiler 01"other heater 8 thus intermingling withthe products of combustion andtending to promote complete combustion. A damperl t is pivo-tallyconnected with the upper side of fitting 6 and is operatively connectedby means of link 15 with operating arm 16 on the cross shaft 17 in pipe7. An operating arm 18 is secured to one end of shaft 17 outside of pipe7 and is equipped with an adjustable weight-19 and adjusting chain 20 bymeans of which the damper may be secured in different adjustingpositions. With this arrangement it will be observed that the weight 19tends to normally open the damper lat but that the position of thedamper may be regulated through chain 20 as will be readily understood.The damper controls the combustion in the usual manner and at the sametime tends to deflect the hot flames upwardly over the fitting 6 toprevent intermingling of the air coming in through said fitting.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. A horizontal smoke pipe in combination with a hollow fitting arrangedtransversely in the lower portion thereof, said fitting being perforatedon the side toward the ap proaching smoke and gases, means forconducting air in contact with the outer surface of said pipe to heatthe same and discharge it into said fitting, a damper hingedlyconnected. to said fitting and means for operating said damper,substantially as described.

2. The combination with a substantially horizontally extending smokepipe, of an air supplying chamber secured to the exterior of'said smokepipe and in contact with the outer wall thereof throughout substantiallythe length of saidchamber, said chamber comprising a substantiallyvertical portion andasubstantially horizontal por-' tion,'the'latterbeing provided on its under face and adjacent the pipe with air inletopenings and the lower end of said vertical portion communicating withthe interior of said smoke pipe, substantially as described.

3, The combination with a substantially horizontally extending smokepipe, of a hollow fitting arranged in the lower portion thereof, saidfitting being provided with air discharge openings onthe side toward'theapproach of the smoke and with air entry openings at its endscommunicating through the walls of said smoke pipe with the exteriorthereof; air supplying chambers secured to the exterior of said smokepipe, said chamber being substantially in T-form, the cross Copies. ofthis patent may be obtained for on the outer side of said smoke pipe;and an adjustable chain secured to the free end of said weighted arm,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

5 JOHN S. ANDREWVS. Witnesses:

MAE E. FALLS, ERNEST A. OBRIEN.

five cents each, by addressing the Commissioner of Patents. Washington,D. C.

